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Old 02-06-2008, 11:21 PM   #1
williaty
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Default Best Location for a WBO2 Sensor?

On a 2005 2.5RS, is the best place to install a bung for a WBO2 just after the collector in the headers, or at the front of the cat section?
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Old 02-07-2008, 01:52 AM   #2
midnight2.5rs-t
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i would say either one of those would work. you also have to think which one will be easier to drill and weld on. or do both and see which one gets you a better reading.
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Old 02-07-2008, 01:59 AM   #3
Tim Sanderson
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Is your header steel or cast? You'll have a crappy time welding onto cast.
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Old 02-07-2008, 02:08 AM   #4
williaty
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It's thin wall mild steel tubing on the RSes.
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Old 02-07-2008, 07:36 PM   #5
PhilSine
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Too close to the collector will cause many WB O2 sensors to overheat. Ask me how I know this

Slightly further back is my suggestion based up on personal experience.
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